unutterables
nounEtymology One of a set of words for trousers and undergarments suggesting that they cannot be mentioned. Compare inexpressibles, unmentionables, unwhisperables.
1
Slang Trousers.
- […] not liking to sit in wet trousers took them off and hung them up before the fire to dry. He presented a very picturesque appearance wanting his unutterables.1961, Thomas Cather, Thomas Yoseloff, Voyage to America: The Journals of Thomas Cather, page 156: